/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 全局容器 */
.container {
    min-height: 100vh;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
    width: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 80px;
    width: 100%;
    transition: all 0.3s ease;
}

/* 透明状态导航栏 */
.navbar-transparent {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: none;
}

/* 实心状态导航栏 */
.navbar-solid {
    background: #ffffff;
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar-content {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    width: 100%;
}

.logo-section {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.logo-text {
    font-size: 32px;
    font-weight: bold;
    color: #1a1a1a;
    margin-right: 6px;
    display: inline-block;
    transition: color 0.3s ease;
}

.logo-image {
    height: 60px;
    width: auto;
    margin-right: 6px;
    display: inline-block;
    transition: opacity 0.3s ease;
}

.logo-subtitle {
    font-size: 18px;
    font-weight: normal;
    color: #6b7280;
    display: inline-block;
    transition: color 0.3s ease;
}

/* 透明状态下的文字颜色 */
.navbar-transparent .logo-text {
    color: #ffffff;
}

.navbar-transparent .logo-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.nav-menu {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.nav-item {
    font-size: 16px;
    font-weight: 500;
    color: #6b7280;
    padding: 12px 16px;
    margin-right: 16px;
    display: inline-block;
    transition: color 0.3s ease;
    text-decoration: none;
}

.nav-item.active {
    color: #1a1a1a;
    font-weight: bold;
    transition: color 0.3s ease;
}

/* 透明状态下的导航项颜色 */
.navbar-transparent .nav-item {
    color: rgba(255, 255, 255, 0.8);
}

.navbar-transparent .nav-item.active {
    color: #ffffff;
}

.nav-right {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.nav-actions {
    display: flex;
    flex-direction: row;
    align-items: center;
    margin-left: 20px;
}

.btn-login {
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 500;
    color: #6b7280;
    margin-right: 12px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-signup {
    padding: 12px 24px;
    border-radius: 8px;
    background: #1a1a1a;
    color: white;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

/* 透明状态下的按钮样式 */
.navbar-transparent .btn-login {
    color: rgba(255, 255, 255, 0.8);
}

.navbar-transparent .btn-signup {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

.btn-text {
    font-size: 16px;
    font-weight: 500;
    color: inherit;
}

.btn-signup .btn-text {
    color: white;
}

/* 主要内容区域 */
.main-content {
    padding-top: 80px;
    min-height: calc(100vh - 80px);
}

.about-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 40px;
    display: flex;
    flex-direction: row;
    gap: 80px;
    align-items: flex-start;
}

.about-left {
    flex: 1;
    max-width: 600px;
}

.about-right {
    flex: 1;
    max-width: 600px;
}

.page-title {
    font-size: 48px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    display: block;
    text-align: left;
}

.page-subtitle {
    font-size: 20px;
    color: #666;
    display: block;
    margin-bottom: 40px;
    text-align: left;
}

.about-description {
    margin-bottom: 40px;
}

.desc-text {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
    display: block;
    text-align: left;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-label {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    display: block;
}

.contact-value {
    font-size: 16px;
    color: #666;
    display: block;
    word-break: break-all;
}

.stats-showcase {
    margin-bottom: 40px;
}

.stats-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 30px;
    display: block;
    text-align: center;
}

.stats-grid-about {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.stat-item-about {
    text-align: center;
    padding: 30px 20px;
    margin: 5px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 1px 1px 1px 1px rgba(0, 0, 0, 0.21);
}

.stat-number-about {
    font-size: 36px;
    font-weight: bold;
    color: #6366f1;
    display: block;
    margin-bottom: 8px;
}

.stat-label-about {
    font-size: 14px;
    color: #666;
    display: block;
}

.mission-section {
    padding: 30px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    margin: 2px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 1px 3px 2px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.mission-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    display: block;
}

.mission-text {
    font-size: 16px;
    line-height: 1.8;
    color: #555;
    display: block;
}

/* 页脚样式 */
.footer {
    background: #f8fafc;
    border-top: 1px solid #e5e7eb;
    padding: 60px 20px 40px;
    width: 100%;
}

.footer-main {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: block;
    position: relative;
    z-index: 2;
}

.footer-brand {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
}

.footer-logo {
    font-size: 32px;
    font-weight: 800;
    color: #1a1a1a;
    display: block;
    margin-bottom: 8px;
    text-align: center;
}

.footer-tagline {
    font-size: 16px;
    color: #6b7280;
    display: block;
    text-align: center;
}

.footer-bottom {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 20px 0;
    border-top: 1px solid #e5e7eb;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    column-gap: 24px;
    text-align: initial;
}

.copyright {
    color: #6b7280;
    font-size: 16px;
    text-align: left;
    flex: 1 1 auto;
}

.footer-links {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    gap: 20px;
    margin-left: auto;
}

.footer-link + .footer-link {
    margin-left: 20px;
}

.footer-link {
    font-size: 14px;
    color: #6b7280;
    cursor: pointer;
    transition: color 0.3s ease;
    display: inline-block;
    text-decoration: none;
}

.footer-link:hover {
    color: #1a1a1a;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(74, 144, 226, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 20px rgba(74, 144, 226, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: rgba(74, 144, 226, 1);
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(74, 144, 226, 0.4);
}

.back-to-top-icon {
    color: white;
    font-size: 20px;
    font-weight: bold;
    line-height: 1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-content {
        padding: 0 15px;
    }
    
    .nav-menu {
        display: none;
    }
    
    .about-container {
        flex-direction: column;
        gap: 40px;
        padding: 40px 20px;
    }
    
    .about-left,
    .about-right {
        max-width: 100%;
    }
    
    .page-title {
        font-size: 36px;
        text-align: center;
    }
    
    .page-subtitle {
        font-size: 18px;
        text-align: center;
    }
    
    .desc-text {
        text-align: center;
    }
    
    .stats-grid-about {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}
 .nav-actions a,
            .logo-section {
                text-decoration: dashed;
            }

            .btn-login .btn-text,
            .btn-signup .btn-text {
                padding: 12px 24px;
                display: block;
            }

            .btn-signup,
            .btn-login {
                padding: 0px;
            }

            .nav-menu .nav-item {
                transition: all 0.3s ease;
                position: relative;
            }

            .nav-menu .nav-item:hover {
                color: #2563eb;
                transform: translateY(-2px);
            }

            .nav-menu .nav-item.active,
            .nav-menu .nav-item:hover {
                color: #2563eb;
                font-weight: 600;
            }

            .nav-menu .nav-item.active::after,
            .nav-menu .nav-item:hover::after {
                content: '';
                position: absolute;
                bottom: -5px;
                left: 0;
                width: 100%;
                height: 2px;
                background: linear-gradient(90deg, #2563eb, #3b82f6);
                border-radius: 1px;
            }

            .btn-login {
                transition: all 0.3s ease;
                border-radius: 6px;
                overflow: hidden;
            }

            .btn-login:hover {
                background: rgba(37, 99, 235, 0.1);
                transform: translateY(-1px);
                box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
            }

            .btn-login a {
                transition: all 0.3s ease;
                display: block;
            }

            .btn-login:hover a {
                color: #2563eb;
                font-weight: 600;
            }
            /* 语言选择器样式 */
            .lang-select {
                margin-left: 20px;
                padding: 8px 24px 8px 10px;
                border: 1px solid #e2e8f0;
                border-radius: 8px;
                background-color: rgba(255, 255, 255, 0.9);
                color: #64748b;
                font-size: 14px;
                cursor: pointer;
                outline: none;
                appearance: none;
                -webkit-appearance: none;
                background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
                background-repeat: no-repeat;
                background-position: right 8px center;
                transition: all 0.3s ease;
                font-weight: 500;
            }

            .lang-select:hover {
                border-color: #2563eb;
                color: #2563eb;
                background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%232563eb' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            }

            /* 透明导航栏下的适配 */
            .navbar-transparent .lang-select {
                background-color: rgba(255, 255, 255, 0.2);
                border-color: rgba(255, 255, 255, 0.3);
                color: #fff;
                background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
            }
            
            .navbar-transparent .lang-select option {
                background-color: #fff;
                color: #333;
            }
/* 版权信息 */
/*
* LRC Editor Styles
* Copyright (c) 2025 AIM Issue
* All rights reserved.
* 
* This stylesheet is part of the AIM Issue LRC Editor project.
* Unauthorized copying, modification, or distribution is prohibited.
* 
* Author: AIM Issue Team
* Version: 1.0.0
* Last Updated: 2025
* 
* For more information, visit: https://www.aimissue.com
*/